<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./vue.js"></script>
</head>
<body>
    <div id="root">
        <div>
            <input v-model="inputValue">
            <button @click="handleSubmit">提交</button>
        </div>
        <ul>
            <todo-item 
            v-for="(item,index) of list" 
            :content="item" 
            :index="index"
            @delete="handleDelete">
        </todo-item>
        </ul> 
    </div>

    <script>

        // // 全局组件
        // Vue.component("todo-item",{
        //     template:"<li>item<li>"
        // })

        // 局部组件
        var TodoItem = {
            props:["content","index"],
            template:"<li @click='handleClick'>{{content}}<li>",
            methods: {
                handleClick() {
                    this.$emit("delete",this.index)
                }
            }
        }

        new Vue({
            el:"#root",
            components:{
                "todo-item":TodoItem
            },
            data: {
                inputValue: "你好",
                list:[]
            },
            methods:{
                handleSubmit() {
                    this.list.push(this.inputValue)
                    this.inputValue = ''
                },
                handleDelete(index) {
                    // alert(index)
                    this.list.splice(index,1)
                }
            }
        })
    </script>
</body>
</html>